Grease-gun.



W. J. KUNNECKE.

GREASE GUN.

APPLICATION FILED JAN. H. 1917.

Patented Apr, 23, 1918.

NTT' Kl ll WTAT l WILLIAM JYKUNNECKE, OF BALTIMORE, MARYLAND.

GREASEGUN.

Application filed January 11, 1917.

provements in Grease-Guns, of which the following is a specification.

My lnvention has relation to improvements in grease guns for lubricating parts of automobiles and the like, and it has for its object to provide an implement which will. be simple in construction, easily operated, and cheaply manufactured.

lVith these ends in view the invention consists in the novel constructionand combination of parts as will be hereinafter more in detail described, and the asserted novelty specifically claimed.

I have illustrated myv invention in the accompanying drawings, in which:

Figure 1 represents a perspective view of the device in closed position.

Fig. 2 a perspective view of the device in opened position.

Fig. 3 a longitudinal sectional view of the device in closed position, and t Fig. 4 a sectional. view on line 44 of Fig. 3.

Similar letters of reference designate corresponding parts in the several figures.

Referring to the drawings, A. designates.

an outer metallic tube within which is telescopically located a diametrically smaller charging and discharging inner metallic tube B of trough-like construction for the reception of a predetermined quantity of grease with which tube B may be charged. These tubes A and B at one end each have perforations a and 7) formed in alinement with each other and centrally in the ends of 7 said tubes for a purpose which will be hereinafter explained. Upon the opposite end of the outer and diametrically larger metallic tube A. is provided a nozzle 0, fric- Specification of Letters Patent.

Patented Apr. 23, 191$. Serial No. 141,810.

tionally fitted to said metallic tube A by any suitable fastening means.

D designates a piston rod which may be of the usual or of any approved construction, and upon the lower end of said rod D is secured the usual plunger E. The opposite end of the rod D is formed with an integral handle F. In sealing the inner shell or tube theinner end of the outer shell or tube A is inserted within the passage 0 which is formed between the nozzle C and the forward portion of the inner shell or tube B.

The operation of the device is as follows:

To fill the grease gun, pull back the handle.

discharged, after which the gun is again ready for charging.

What I claim as new and desire to secure by Letters Patent is:

In a grease gun of the character described,

an outer tube closed at one end and open at its other end a nozzle adapted to be frictionally fitted to the open end of the tube, an inner tube longitudinally slotted, open at one end and closed at the other end with the closed end contacting the closed end of the outer tube when in operative position, said closed ends having therein, and a piston in said inner tube having its operating stem projecting outwardly through said openings, the piston and stem cooperating with the two tubesto prevent a complete separation of the tubes when the same are relatively moved for purposes of recharging the inner tube.

In testimony whereof I affix my signature.

W ILLI'AM J. KUNNECKE.

Unmet or thin patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. t2.

registering openings 

